default-internal.go

Documentation: k8s.io/kubernetes/pkg/apis/flowcontrol/internalbootstrap

     1  /*
     2  Copyright 2019 The Kubernetes Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package internalbootstrap
    18  
    19  import (
    20  	flowcontrolv1 "k8s.io/api/flowcontrol/v1"
    21  	"k8s.io/apimachinery/pkg/runtime"
    22  	"k8s.io/apiserver/pkg/apis/flowcontrol/bootstrap"
    23  	"k8s.io/kubernetes/pkg/apis/flowcontrol"
    24  	"k8s.io/kubernetes/pkg/apis/flowcontrol/install"
    25  )
    26  
    27  // MandatoryFlowSchemas holds the untyped renditions of the mandatory
    28  // flow schemas.  In this map the key is the schema's name and the
    29  // value is the `*FlowSchema`.  Nobody should mutate anything
    30  // reachable from this map.
    31  var MandatoryFlowSchemas = internalizeFSes(bootstrap.MandatoryFlowSchemas)
    32  
    33  // MandatoryPriorityLevelConfigurations holds the untyped renditions of the
    34  // mandatory priority level configuration objects.  In this map the
    35  // key is the object's name and the value is the
    36  // `*PriorityLevelConfiguration`.  Nobody should mutate anything
    37  // reachable from this map.
    38  var MandatoryPriorityLevelConfigurations = internalizePLs(bootstrap.MandatoryPriorityLevelConfigurations)
    39  
    40  // NewAPFScheme constructs and returns a Scheme configured to handle
    41  // the API object types that are used to configure API Priority and
    42  // Fairness
    43  func NewAPFScheme() *runtime.Scheme {
    44  	scheme := runtime.NewScheme()
    45  	install.Install(scheme)
    46  	return scheme
    47  }
    48  
    49  func internalizeFSes(exts []*flowcontrolv1.FlowSchema) map[string]*flowcontrol.FlowSchema {
    50  	ans := make(map[string]*flowcontrol.FlowSchema, len(exts))
    51  	scheme := NewAPFScheme()
    52  	for _, ext := range exts {
    53  		var untyped flowcontrol.FlowSchema
    54  		if err := scheme.Convert(ext, &untyped, nil); err != nil {
    55  			panic(err)
    56  		}
    57  		ans[ext.Name] = &untyped
    58  	}
    59  	return ans
    60  }
    61  
    62  func internalizePLs(exts []*flowcontrolv1.PriorityLevelConfiguration) map[string]*flowcontrol.PriorityLevelConfiguration {
    63  	ans := make(map[string]*flowcontrol.PriorityLevelConfiguration, len(exts))
    64  	scheme := NewAPFScheme()
    65  	for _, ext := range exts {
    66  		var untyped flowcontrol.PriorityLevelConfiguration
    67  		if err := scheme.Convert(ext, &untyped, nil); err != nil {
    68  			panic(err)
    69  		}
    70  		ans[ext.Name] = &untyped
    71  	}
    72  	return ans
    73  }
    74
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